Dexmedetomidine versus low-dose ketamine as an anaesthetic adjuvant for intraoperative hemodynamic stability in elective supratentorial craniotomy: A prospective, randomized, double-blind study - Ankita Jaiswal; Stuti Bhamri; Sandeep Dey; Kanika Gupta; Mukesh Mohan Gupta (Indian Journal of Clinical Anaesthesia, 2026)